RxCalc vs IDSA Practice Guidelines
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RxCalc
This medical app provides essential pharmacokinetic calculations for healthcare professionals. It offers a fast interface and comprehensive results to streamline dosing regimen design and patient-specific adjustments for medications like vancomycin and aminoglycosides.
- Pharmacokinetic calculations
- Vancomycin dosing
- Aminoglycoside dosing
- Post-level adjustments
- Fast interface
- Comprehensive results
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RxCalc puts commonly used pharmacokinetic calculations in the palm of your hand with your iPhone or iPod Touch. The fast interface and comprehensive results help you spend less time crunching numbers and more time working on other, more important issues. This tool is designed to help pharmacists, and physicians, quickly perform the most commonly used pharmacokinetic calculations. Calculations for designing new vancomycin and aminoglycoside dosing regimens as well as patient specific post-level adjustments to current dosing regimens are included.
IDSA Practice Guidelines
Access and stay updated with the latest clinical guidelines from the Infectious Diseases Society of America. This app offers interactive tools, search functionality, and the ability to bookmark key information and take notes for healthcare professionals.
- Access clinical guidelines
- Interactive tools
- Search guidelines
- Bookmark pages
- Take notes
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Access the Infectious Diseases Society of America (IDSA) guidelines app anytime, anywhere! Download the app today and stay up-to-date on IDSA clinical guidelines, interactive tools, and new resources. The app contains features to search through guidelines, bookmark important pages and take notes on key information. Visit the IDSA app for new guidelines that are released throughout the year and new updates to existing guidelines. Disclaimer: The Infectious Diseases Society of America (IDSA) provides this app (“App)” for health care professionals only, and not the general public. The App is provided for informational purposes only, and it is not intended to provide medical or treatment advice and may not be treated as such by the user. As such, this App may not be relied upon for the purposes of medical diagnosis or as a recommendation for medical care or treatment. The information on this App is not a substitute for professional medical advice, diagnosis or treatment. All content, including text, graphics, images and information, contained on or available through this App is for general information purposes only.
Screenshots
Verdict
The clearest difference is review sentiment: RxCalc at 53% against IDSA Practice Guidelines's 0%. RxCalc also leads on chart position (#96 vs unranked). IDSA Practice Guidelines's advantage is price (Free vs $2.99) and ratings volume (559 vs 5). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
IDSA Practice Guidelines is free to download; RxCalc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
IDSA Practice Guidelines holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: IDSA Practice Guidelines has 559 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 53% of RxCalc's written reviews are positive against 0% of IDSA Practice Guidelines's, so the app with the better star average is not the one people write more warmly about.
RxCalc ships an update every 25 months, IDSA Practice Guidelines every 7 months. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.
| Parameter | RxCalc | IDSA Practice Guidelines |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.6 (5 ratings) | 4.8 (559 ratings) — better |
| Positive reviews | 53.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 | 559 — better |
| Update frequency | Every 25 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #96 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 105 MB |
| Age rating | 12+ | 17+ |
| Developer | Rob Fahrni | Infectious Diseases Society of America |
Customer experience
RxCalc
IDSA Practice Guidelines
In-app purchases
RxCalc
No in-app purchases
IDSA Practice Guidelines
No in-app purchases
Questions
Is RxCalc free?
Is IDSA Practice Guidelines free?
Which has better reviews, RxCalc or IDSA Practice Guidelines?
Do RxCalc or IDSA Practice Guidelines have ads?
Which is updated more often, RxCalc or IDSA Practice Guidelines?
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